Dopey was a member of a bank robbing crew who was hired by the Joker to rob Gotham National Bank. He and Happy gained access to the bank's roof by firing a cable gun across from an adjacent building, and then disabled the silent alarm from the rooftop. He noticed that the distress signal was calling a private number rather than 911 (due to the bank being run by the mob) but told his accomplice Happy that is wasn't a problem and he was finished disabling the alarm. Happy then shot him in the back, killing him and continued with the job.

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